Bicycle air-pump



(No Model.)

W. H. OSTRANDBR.

-BI0YGLB AIR PUMP.

No. 554,084; Patented Feb. `4, 1896.A

W/T/*VESSESI AN DRIW BLRANAM. PHUYWLITHQWASHINGTON. DL.

vthe line 2 2 of Fig. 1.

UNITED STATES @PATENT OFFICE.

WILLIS II. OSTRANDER, OF BOSTON, MASSACHUSETTS.

BICYCLE AIR-PUMP.

SPECIFICATION formingpart of Letters Patent No. 554,084, dated February 4,1896.

Application tiled April 27, 1895.

To au whom] it may concern:-

Be it known that I, WILLIS H. OsTRANDER,

of East Boston, in the county of Suffolk and State of Massachusetts, have invented a new and Improved Bicycle Air-Bump, of which the following is a full, clear,and exact description.

This invention relates to certain improvements in that class of air-pumping devices which are employed for inflating the pneumatic tires of bicycles and the like, and the object of the invention is to provide a device of this character constructed so as to be incapable of detachment from the bicycle-frame, whereby when desired for use the air-pump will always be at hand and not liable to be lost or mislaid, as is the case when the airpump is constructed as a separate attachment.

The invention consists in utilizing one of the tubular brace-bars of the frame as a cylinder, wherein is -arranged to play a piston, the rod of which passes up through the upper end of the cylinder or brace-bar and is guided at its upper end in the vertical portion or branch of a hollow saddle-post, the piston-rod being provided at its upper extremity with an operating-handle so arranged as to lie normally below the saddle and out of the way;

but when it is desired to use the air-pump the saddle, which is arranged on a sleeve on the saddle-post, is turned to one side so as to be out of the way.

The invention also contemplates certain novel features of construction and combinations of parts whereby certain advantages are attained, all as will be hereinafter fully set forth. The novel features of the invention will be carefully defined in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specication, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation showing the arrangement of my improved pumping apparatus in positionfor use on the frame of the bicycle, which is represented in section for the purposes of illustration. Fig. 2 is a vertical section taken on the plane indicated by Fig. 3 isa sectional detail view showing the means employed for supporting the bicycle-saddle in place on the frame, and Fig. 4 is a sectional View drawn `Serial No. 547,329. (No model.)

construction to be hereinafter referred to.

In the views, 1 represents theframe of the bicycle as a whole, which includes a vertical tubular brace-bar 2 having an open upper end forming a socket to receive the tubular lower end of the saddle-post 3, as clearly seen in Fig. 1.- In the brace-bar 2 is arranged a piston 4having'a piston rod or stem 5 extending axially through the brace bar and also through the central hollow of the vertical portion 3 of the saddle-post, which forms a guide for the upper end thereof, as clearly indicated in Fig. 3, said stem or piston-rod 5 being provided with a handle 6 at its upper end arranged under the forward part or pommel of the saddle 7.

The saddle-post is provided with a reduced portion 8 having a socket 9 at its forward end to receive the vertical portion 3 thereof, and on this reduced portion 8 is arranged a sleeve 10 having its front end cut out, as indicated vat 11 in Fig. 3, to fit the curved rear surface of the said socket 9 so that said sleeve will be thereby h eld against turning on the reduced portion 8 of the saddle-post. At its extremity said reduced portion 8 of the saddle-post is screw-threaded and adapted to receive a nut may be forced tightly up against the curved rear side of the socket 9 of the saddle-post and held against turning on the part 8 thereof.

The saddle 7 is provided with a socket-piece 13 adapted to be clamped on the sleeve 10 by means of a clamp-screw 14, as clearly indicated in Fig. 1. l Avalve-tube 15, (clearly seen in the enlarged detail view, Fig. 4,) provided with exterior screw threads, is screwed through the brace-bar 2 below the piston 4 therein, and is provided with a valve-seat adapted to be engaged by a valve 16 arranged in the interior of said valve-tube at one end thereof, said end being open to the outer air, whereby the air may be drawn into the interior of the brace-bar 2 when the piston 4 is raised, passing through perforations 17 formed in the side walls of the said valvetube 15. The opposite end of said tube 15 is bent upwardly and connected with an elastic tube 18 of small diameter and sufficient length, said tube being provided at its upper eXtremity with a nipple 19 adapted to be inserted in to an enlarged scale and showing a detail of l12 screwing thereon whereby the sleeve 10 IOO the air-valve of the pneumatic tire of the bicycle-wheel in the well-known way.

The nipple 19, as shown in Fig. 1, is enlarged and is adapted to engage between the opposite ends 2O of the split clamping ring or band 21 secured at the upper end of the brace-bar 2 of the frame, and the tube 18 will be by preference of such a length that when the nipple 19 is thus engaged with the ends of said clamping-band said tube will be slightly strained and thereby held in its folded position close against the brace-bar 2 of the frame, as clearly seen inv Fig. 1.

The operation is as follows: Then it is desired to inflate the pneumatic tire the air-tube 18 is disengaged at its upper end from its retaining device and bent, as seen in dotted lines in Fig. 1, in such a way that the nipple 19 may be inserted at the air-valve of the tire to be inflated. The nut 12 on the horizontal reduced portion S of the saddle-post is now loosened and the sleeve 10 slid rearwardly so as to disengage its curved front end 11 from the curved rear face of the socket 9 on the saddle-post, whereby said sleeve will be permitted to be turned or swung laterally7 as indicated in dotted lines in Fig. 2, out of the way of the handle 6, which is fixed at the upper end of the piston rod or stem 5. The handle 6 is then grasped and manipulated to move the piston 4 in the brace-bar 2, whereby air is drawn into said brace-bar through the valve 16, and forced out of said brace-bar through the valve-tube 15. The lower end of the bracebar 2 below the valve-tube 15 is closed by a plug 22, as seen in Fig. et.

The device constructed as above described is of an exceedingly simple and inexpensive character, and being attached to and forming a part of the frame of the machine cannot be separated therefrom, and is not liable to become lost or broken as is the case with other pumping devices constructed in attachment form. Moreover, the weight of the pumping device constructed as herein set forth is very slight and increases the weight of the machine but very little. Its arrangement is such that the parts of the bicycleframe are utilized wherever possible, the brace-bar 2 of the machine forming the cylinder and the saddle-post forming the guide for the piston-rod. The handle 6 at the upper end of the piston-rod being arranged immediately below the saddle 7 is out of the way at all times except when the saddle is swung sidewise when it is desired to inllate the tires.

The arrangement of the saddle upon the sleeve 10 aifords a convenient means for mounting the saddle without requiringloosening and tightening of the set-screw 14C each time the saddle is swung sidewise.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination, of a bicycle-frame provided with a hollow brace-bar having one end open and the other end closed and provided with an air-inlet valve and an outlet-tube adapted for attachment to the air-valve of a pneumatic tire, a saddle-post having a tubular vertical portion itting the upper end of the brace-bar, and a horizontal portion, the latter provided with a rotatable sleeve for carrying a saddle, and means for preventing rotation of said sleeve, a piston arranged in the brace-bar and having a stem extending through the hollow of the vertical portion of the saddle-post, and a handle on the upper end of said stem, substantially as set forth.

2. The combination of a bicycle-frame provided with a hollow brace-bar having one end open and the other end closed and provided with an air-inlet valve and an outlet-tube adapted for attachment to the air-valve of a pneumatic tire, a saddle-post having a tubular vertical portion adapted for insertion in the open end of the brace-bar and having a horizontal upper portion, a piston in said brace-bar having a stem extending through the hollow of the vertical portion of the saddle-post and provided at its exterior with a handle, a sleeve mounted on the horizontal portion of the saddlepost and adapted to be turned and moved longitudinally thereon, a nut screwing on the end of the horizontal portion of the saddle-post and adapted to clamp said sleeve against turning thereon, and a saddle having a socket-piece provided with a set-screw adapted to be set fast on said sleeve, substantially as set forth.

XVM. E. RUSSELL, THOMAS B. WILSON.

IOO 

